Dynoed new car

0

00gtconv

Founding Member

Oct 25, 2002

516

0

0

Jul 29, 2004

#1

• Jul 29, 2004

• #1

Well I dynoed my new 03 cobra yesterday. 2.93 pulley, offroad x pipe, cold air.
The car hit 400.1 hp with 433tq but we shut it down at 5200 rpms when we saw the a/f ratio at 14.1(whew). I'm very excited because several cobras with the same set up (without a tune) gained 40+hp with a proper tune.

Also this was on a mustang dyno that has been posting very low numbers. My stock GT posted 187 rwhp on this Dyno (ouch).

More good news my wife wants to keep our 00 gt conv. It sure is fun with the top down;even with the Bottle off the car. I guess I'm still a loyal 2v owner for now!!!

 

mrvax

Stay thirsty my friends

Founding Member

Nov 29, 1999

5,225

3

79

SN Moderator: Orlando, Fl.

Jul 29, 2004

#2

• Jul 29, 2004

• #2

Those numbers are fantastic for a Mustang Dyno.

 

1tirefire

New Member

Jun 2, 2004

118

0

0

Northern Bay FF/SS

Jul 29, 2004

#3

• Jul 29, 2004

• #3

what would a stock 96-98 gt put down?

 

Defleshed

Satanic Mechanic

Nov 30, 2003

10,569

1

0

In Torment, In Hell

Jul 29, 2004

#4

• Jul 29, 2004

• #4

cool dude! very nice! keep us posted on future upgrades

 

Blakers01GT

Master of the Clubhead

Founding Member

Sep 21, 2001

2,110

0

0

Brown Deer, WI

Jul 29, 2004

#5

• Jul 29, 2004

• #5

with how lean he is running, on a regular dyno he should see 430/440RWHP, but since he's running lean he's putting some aggressive numbers out, once he fattens that tune up, they numbers will go down, but not by much, good numbers! now drive it like a grandma until you get that tune

 

0

00gtconv

Founding Member

Oct 25, 2002

516

0

0

Jul 29, 2004

#6

• Jul 29, 2004

• #6

Lean ant mean

Blakers01GT said:

with how lean he is running, on a regular dyno he should see 430/440RWHP, but since he's running lean he's putting some aggressive numbers out, once he fattens that tune up, they numbers will go down, but not by much, good numbers! now drive it like a grandma until you get that tune

Click to expand...

I thought the same thing;lean is mean. But this is not true when it comes to tuning a cobra with smaller pullies.
All the tuning places and all the threads say the same thing.
With a smart tune : 11.5-11.7 a/f ratio all the way through the pull: each said I would see a 35-55 rwhp gain.

 

S

sjrtx

New Member

Mar 21, 2004

151

0

0

Houston-NW side

Jul 29, 2004

#7

• Jul 29, 2004

• #7

got news for you-a lot of cars pick up more than 40hp with a tune and those mods.

the other day when i was at Houston Performance, i watched an 03 cobra with:
Catback, K&N, and pulley put down 400 at the wheels. Then they did a tune-picked up 40hp. Then they did another tune-picked up 50hp-and even after the second one, the car was running so rich up top, it was blowing huge clouds of black smoke out the tail pipes. I didnt stay to see what the eventual outcome was.....but im sure it was atleast 65hp more after the tune.

 

S

sjrtx

New Member

Mar 21, 2004

151

0

0

Houston-NW side

Jul 29, 2004

#8

• Jul 29, 2004

• #8

00gtconv said:

I thought the same thing;lean is mean. But this is not true when it comes to tuning a cobra with smaller pullies.
All the tuning places and all the threads say the same thing.
With a smart tune : 11.5-11.7 a/f ratio all the way through the pull: each said I would see a 35-55 rwhp gain.

Click to expand...

and Lean will not always make more power.


Mine is naturally aspirated...and when we tuned it, (it had been running rich) we leaned it out to the 14.5:1 range. Then i had him fatten it up, and it made MORE hp with it at 13.5:1.

Then i had the car retuned-and its making its best numbers yet at 12.5:1.

 

BLK_ROUSH

Founding Member

Feb 5, 2000

1,300

0

36

Newnan, GA

Jul 29, 2004

#9

• Jul 29, 2004

• #9

1tirefire said:

what would a stock 96-98 gt put down?

Click to expand...

Just a lil' less.

Satisfying numbers for simple mods. Another testament to the 03/04s.